L-arginine reduces heart rate and improves hemodynamics in severe congestive heart failure - Bocchi, Edimar Alcides; Moraes, Alvaro Vilella de; Esteves Filho, Antonio; Bacal, Fernando; Auler Júnior, José Otávio Costa; Carmona, Maria Jose; Belloti, Giovanni Guido; Ramires, Antonio Franchini (Clinical Cardiology, 2000)